NEUROPTERA. 193 



E.vulgata,L.', De Geer, Insect., II, xv, 9 — 15. Four wings; 

 three filaments at the extremity of the abdomen; brown; abdo- 

 men deep yellow, maiked with triangular black spots; wing.s 

 spotted with brown. 



E. dipfera, L. But two wings; the male with four com- 

 pound eyes, two of which are larger than the others and placed 

 perpendicularly like two columns *. 



FAMILY II. 



PLANIPENNES. 



This family, which, with the third, forms the greater part of the 

 order of the SyniHata of Fabricius, comprises those Neuroptera in 

 Avhich the antennae, always multiarticvilated, are much longer than the 

 head, without being subulate or styliform. Their mandibles are 

 very distinct; their inferior wings almost equal to the superior ones, 

 and extended or simply folded underneath at their anterior margin. 



Their wings are almost always much reticulated and naked ; their 

 maxillary palpi are usually filiform or somewhat thicker at the extre- 

 mity, shorter than the head, and composed of from four to five joints. 



I will divide this family into five sections, which, by reason of the 

 habits of the Insects that compose them, form as many small sub- 

 families. 



1. The Panorpat.'e of Latreille, Avhich have five joints to all the 

 tarsi, and the anterior extremity of their head prolonged and nar- 

 rowed in the form of a rostrum or proboscis. 



They constitute the genus 



Panorpa, Lin. Fab., 



Where the antenn?e are setaceous and inserted between the eyes ; 

 the clypeus is prolonged into a conical, corneous lamina, arched 

 above to cover the mouth, and the mandibles, maxillas and labium arc 

 almost linear. They have from four to six short, filiform palpi ; in 

 those of the maxillae 1 could distinctly perceive but four joints. 



Their body is elongated, the head vertical, the first segment of the 

 trunk usually very small, in the form of a collar, and the abdomen 

 conical or almost cylindrical. 



There is much difference between the two sexes in several species. 

 Their metamorphoses have not yet been observed. 



In some, and the greater number, the naked or exposed portion of 

 the thorax is formed of two segments, the first of which is the smallest. 



* For the other species, see Olivier, Encyc. Method. ; Fabricius ; Latreille, Hist. 

 Gener. des Crust, et des Insect, t. Xlll, p. 93; and Lat. Gen, Crust, et Insect., 

 Ill, p. 183. 



